EP3626657A1 - Winder - Google Patents

Abstract

The invention relates to a winding machine (1). According to the invention, a head thread guide (14) is displaceably guided with a degree of freedom (19) relative to a frame (2) of the winding machine (1). If a thread guide (4) performs a compensating movement (23) along a degree of freedom (6) during the winding travel as a result of an increase in the diameter of a winding formed on a spindle (3), a corresponding movement of the head thread guide (14) along the degree of freedom (19 ) take place in such a way that an entry angle β of the winding material (11) into the thread tail unit (4) does not change via the winding cycle.

Description

TECHNICAL FIELD OF THE INVENTION

The invention relates to a winding machine, by means of which the winding of a material to be wound is carried out with a winding with any winding pattern, which winding can take place with or without a sleeve, so that the coil can have only the winding or the winding and a sleeve.

• biegeweich ausgebildet ist und/oder
• als Einzelfilament oder Multifilament (beispielsweise mit mehr als 12.000 Einzelfilamenten bis hin zu 300.000 Einzelfilamenten) ausgebildet ist und/oder
• eine zu der Wicklung gewickelte Länge von mehr als 100 km (insbesondere mehr als 200 km, mehr als 300 km bis hin zu einer Länge von 600 km) besitzt und/oder
• ein Gewicht/Länge (sogenannter "Titer") im Bereich von 10.000 bis 20.000 den [g/9.000 m] (beispielsweise von 12.000 bis 16.000 den) besitzt und/oder
• als Kreuzwicklung gewickelt ist und/oder
• als Kreuzwicklung ohne Abstützung der Stirnseiten an Trommelscheiben gewickelt ist und/oder
• mit Spulgeschwindigkeiten von mindestens 10 m/min (vorzugsweise mehr als 30 m/min oder mehr als 50 m/min) gewickelt wird.

The winder is preferably used to wind a ware in the form of a "technical yarn". This is a thread-like or ribbon-like ware

• is designed to be flexible and / or
• is designed as a single filament or multifilament (for example with more than 12,000 individual filaments up to 300,000 individual filaments) and / or
• has a length of more than 100 km wound in the winding (in particular more than 200 km, more than 300 km up to a length of 600 km) and / or
• has a weight / length (so-called "titer") in the range from 10,000 to 20,000 den [g / 9,000 m] (for example from 12,000 to 16,000 den) and / or
• is wound as a cross winding and / or
• is wound as a cross winding without support of the end faces on drum disks and / or
• is wound at winding speeds of at least 10 m / min (preferably more than 30 m / min or more than 50 m / min).

STATE OF THE ART

A generic winder is out, for example WO 03/099695 A1 known. In this winding machine, two winding spindles are rotatably mounted on a rotatable turret. By rotating the turret, the spindles can be moved alternately into a winding position and an alternating position, the spindles being able to be coupled to a drive in the winding position and the items to be wound being wound into a winding in the winding position. On a frame of the winding machine, a thread guide is pivotally mounted via a swivel arm, against which, in turn, a pressure roller is rotatably mounted. The thread guide is pressed onto a lateral surface of a winding of a bobbin wound on the spindle in the winding position via the pressure roller. The thread guide has a traversing thread guide. The traversing thread guide is driven in an oscillating manner. Here, the traversing thread guide executes a traversing movement, the stroke of which essentially corresponds to the laying width of the winding material, i.e. the axial length of the winding (whereby, for example, the trailing path between the traversing thread guide and the deposit point can shorten the laying width compared to the stroke) and which is oriented parallel to the longitudinal and / or rotational axis of the spindle. The rotational movement of the spindle or bobbin on the one hand and the traversing movement of the traversing thread guide on the other hand are matched to one another by a suitable control system in such a way that a predetermined winding pattern results. The winding material passes directly from a head thread guide mounted on the frame of the winding machine, which is designed here as a head thread guide roller, to the traversing thread guide and is applied by the latter to the outer surface of the winding via the pressure roller. As a result of the oscillating movement of the traversing thread guide, the winding material runs from the top thread guide to the traversing thread guide in a laying triangle, the length of which depends on the distance of the head thread guide arranged at the apex of the laying triangle from the traversing thread guide and in which a traversing angle changes with the traversing movement within a total traversing angle α. As the diameter of the winding increases, the distance of the pressure roller from the longitudinal and / or rotational axis of the spindle changes, which leads to a pivoting compensatory movement of the swivel arm with the thread tail held thereon.

Another generic winder is marketed by the applicant under the designation "SAHM 830XE" (cf. www.sahmwinder.de/produkte/sahm-carbon-fiber-winders/sahm-830xe.html, date of inspection 22.08.2018). This winding machine does not have a turret, but a single spindle with a fixed longitudinal and / or rotational axis towards the frame of the winder. In this winding machine, the thread tail unit is not mounted on a swivel arm which is pivotably mounted relative to the frame. Rather, the compensating movement of the thread tail takes place with an increasing diameter of the winding in that the thread tail is guided horizontally and translationally displaceably on the frame of the winding machine. Here, too, the winding material arrives directly from a head thread guide roller mounted on the frame of the winding machine to the traversing thread guide of the thread tail unit.

EP 1 656 317 B1 first describes an embodiment with a thread guide which is pivotally mounted on a swivel arm and which carries an overflow bracket, by means of which the winding material is deflected between a head thread guide and the traversing thread guide. For this embodiment, a dancer roll is arranged upstream of the head thread guide, which can be deflected against the pretension of a spring and serves to keep the tension in the winding material as constant as possible. If there is a deflection of the dancer roll for a change in tension in the winding material, this deflection can also be used in an open-loop or closed-loop control for adjusting the speed of the drive in order to maintain a predetermined tension in the winding material and to bring about a constant equilibrium position of the dancer roll. Describes for this known prior art EP 1 656 317 B1 that during the traversing movement the length of the ware within the laying triangle varies with a high frequency corresponding to the high-frequency traversing movement, which leads to undesirable changes in the tension in the ware, which may not be compensated for by means of the dancer roller and the adaptation of the speed of the drive of the spindle can be. In order to keep the change in thread length within the laying triangle as small as possible, the distance of the top thread guide from the thread guide is increased, but this increases the space requirements of the winding machine. EP 1 656 317 B1 also describes the finding that with the increasing diameter of the winding and the associated pivoting of the swivel arm with the thread tail held thereon, the length of the bobbins between the top thread guide and the thread tail, i.e. the length of the Laying triangle changed. This should also lead to variations in the tension in the winding material, which has the consequence that the winding material is applied to the winding with different tension. Varies the tension of the material to be wound between the edge of the bobbin and the center of the bobbin EP 1 656 317 B1 the winding material is detached from the edge of the winding and then wrapped around a core of the coil, which can lead to a machine stop or even at one later use of the spool during unwinding can result in a machine stop or damage to a machine. EP 1 656 317 B1 proposes to provide an additional thread support means between the head thread guide and the deflection bar with a traversing traverse thread guide, which is held by a cantilever arm with the greatest possible distance from the traversing thread guide with a deflection bar. In this case, the vertex of the laying triangle is not specified by the head thread guide, but by the additional thread support means. Since the thread support means is also pivoted with the pivoting of the swivel arm and the thread tail, the length of the laying triangle does not change with the increase in the diameter of the winding. An entry angle of the material to be wound between the head thread guide and the additional thread support means does not change and is also independent of the traversing movement. An undesirable influence of the changing diameter of the winding on the length of the laying triangle is avoided by using the thread support means. In order to avoid a change in the length of the ware in the laying triangle and thus fluctuations in the tension in the ware depending on the traversing movement and the traversing angle changed with the traversing movement in the laying triangle EP 1 656 317 B1 In addition, the use of a curved overflow bracket, which is carried by the thread guide and between the traversing thread guide and the additional thread support means makes an additional deflection of the items to be washed, the extent of which changes depending on the traversing angle changed with the traversing movement in the laying triangle. The contour of the overflow bracket is adjusted so that the length of the material to be wound between the thread support means and the traversing thread guide does not change regardless of the position of the traversing thread guide, that is to say regardless of the traversing angle within the laying triangle. For this purpose, there is a greater deflection of the material to be wound by the overflow bracket when the traversing thread guide is in the middle than is the case when the traversing thread guide is located in the edge region. EP 1 656 317 B1 also discloses further embodiments in which an additional roller is supported on the thread tail unit by means of a cantilever arm with a strain gauge arranged therein, this additional roller being arranged upstream of the thread support means. In order to keep the mass and the size of the thread tail small, the length of the cantilever arm on which the thread support means is supported has narrow limits, but the length of the laying triangle is also small. This in turn has the disadvantage that the traversing movement changes the tension in the ware to an undesirable extent or the use of a curved overflow clamp is absolutely necessary, which, however, can be undesirable due to the additional deflection, which can lead to impairment of the ware.

The applicant also sells a winder under the label "Carbon Star 850XE" (see www.sahmwinder.de/produkte/sahm-carbon-fiber-winders/carbonstar-ii.html; date of inspection: August 22, 2018) , in which the thread guide with the traversing thread guide is moved with the compensating movement due to the increasing diameter of the winding in a linear movement towards the head thread guide. In this way, the compensating movement does not lead to a change in the entry angle β and the angle at which the material to be reeled leaves the head thread guide and the angle at which the material to be reeled enters the thread guide. However, for this embodiment, the length of the laying triangle is reduced with the compensating movement, which has the consequence that the total traversing angle α of the laying triangle becomes larger with the compensating movement, which also increases the extent of a necessary deflection of the items to be washed by the traversing thread guide, which is undesirable.

The applicant also sells a winder under the label "SAHM 880XE" (see www.sahmwinder.de/produkte/sahm-carbon-fiber-winders/sahm-880xe.html; date of inspection: August 22, 2018), at the thread guide with the traversing thread guide is fixedly arranged on a frame of the winding machine, while for the compensating movement the spindle with the bobbin formed thereon is displaced. However, this requires a very stable construction, particularly in the case of heavy coils, so that this embodiment is preferably used for light coils with a weight of less than 20 kg.

OBJECT OF THE INVENTION

• der Umlenkung des Spulguts auf dem Weg desselben zu der Wicklung und/oder
• eines Einflusses einer Ausgleichsbewegung des Fadenleitwerks mit Vergrößerung des Durchmessers der Wicklung und/oder
• eines Einflusses eines Changierwinkels in dem Verlegedreieck und/oder
• eines Einflusses der Ausgleichsbewegung auf die Umlenkung des Spulguts (insbesondere im Bereich eines Changierfadenführers)
• einer Gewährleistung, dass sich ein Gesamtchangierwinkel α nicht oder nicht wesentlich ändert, und/oder
• einer Verringerung von Schwankungen der Spannung in dem Spulgut und/oder
• Anforderungen an Einrichtungen wie Tänzerrollen und/oder an eine Regelung des Antriebs zum Konstanthalten der Spannung in dem Spulgut und/oder
• der Qualität der mit der Spule gewickelten Spule und/oder
• der Baugröße des Fadenleitwerks

verbessert ist.The invention has for its object to propose a winder, which with respect

• the deflection of the winding material on the way to the winding and / or
• an influence of a compensating movement of the thread tail with an increase in the diameter of the winding and / or
• an influence of a traverse angle in the laying triangle and / or
• an influence of the compensating movement on the deflection of the winding material (especially in the area of a traversing thread guide)
• a guarantee that a total hinge angle α does not change or does not change significantly, and / or
• a reduction in fluctuations in the tension in the winding material and / or
• Requirements for devices such as dancer rolls and / or for a control of the drive to keep the tension in the winding material constant and / or
• the quality of the coil wound with the coil and / or
• the size of the thread tail

is improved.

SOLUTION

The object of the invention is achieved according to the invention with the features of the independent claim. Further preferred configurations according to the invention can be found in the dependent patent claims.

DESCRIPTION OF THE INVENTION

The winding machine according to the invention has a frame which can also be designed as a base plate, frame or housing. The winding machine has a spindle, which can be rotatable, for example, in order to bring about the rotational movement of the coil during winding, or can also not be rotatable, in which case in particular a drive of the coil to bring about the rotational movement via a drive of a bobbin or one with the lateral surface interacting friction drive can take place. The invention also includes embodiments in which not only one spindle is provided on the winding machine, but at least two spindles. It is also possible here that at least two spindles are held on one turret (cf. the prior art mentioned at the beginning EP 1 507 730 A1 ).

The winding machine according to the invention has a thread tail unit. The thread tail unit has an iridescent traversing thread guide. The thread tail has a pressing means, which is pressed onto a lateral surface of a winding wound on the spindle. The pressure means is preferably a pressure roller which is rotatably mounted on a base body of the thread guide. Such a pressure roller can only be used to support the thread guide on the winding. It is also possible for the rinsing material to be additionally placed on the outer surface of the winding via the pressure roller. It is also possible that via the pressure roller depending on the contact pressure a compression of the winding can take place on the outer surface of the winding, with which the winding can be made harder and / or a different length of the rinsed material can be stored in the same diameter of the winding. It is also possible for the pressure roller to exert a pressing force which can be varied via the winding travel on the outer surface of the winding. It is also possible that the pressure of the pressure roller on the outer surface of the winding is controlled or regulated in such a way that the winding cannot bulge due to excessive pressure or marks on the items to be wound at crossing points of the winding. During the winding travel, the thread tail unit (and thus the traversing thread guide) can be moved with a compensating movement in relation to the spindle in accordance with the increasing diameter of the winding, which is ensured by the pressing means being supported on the outer surface of the winding.

The winding machine has a head thread guide. This head thread guide precedes the traversing thread guide in the thread path. The head thread guide is arranged, held and / or guided on the frame at a distance from the thread guide. The winding material arrives directly from the head thread guide to the thread tail unit without a deflection of the winding material taking place between the head thread guide and the thread tail unit on the path of the winding material. The head thread guide specifies the vertex of the laying triangle.

The prior art has hitherto been based on the prejudice that a head thread guide must be arranged firmly on the frame of the winding machine, while the measures for influencing the path and the deflection of the winding material, in particular on the one hand in connection with the compensating movement and on the other hand with the oscillating movement within the laying triangle, only in the area of the thread tail.

For the first time, the invention proposes (alternatively or also cumulatively to these known measures which are to be taken in the area of the thread tail unit) that the head thread guide is movably held and guided on the frame of the winding machine. Here, within the scope of the invention, a movement of the top thread guide takes place as a function of the compensating movement which the thread tail unit carries out with the change in the diameter of the winding. Here, the movement of the head thread guide takes place in such a way that the effects of the compensating movement on the path of the winding material between the head thread guide and the traversing thread guide are at least reduced. In particular, according to the invention there is a change in the outlet angle the bobbin from the bobbin thread guide and / or a deflection angle of the bobbin in the area of the bobbin thread guide and / or the entry angle of the bobbin into the thread tail unit and / or a deflection angle of the bobbin load in the area of the thread tail unit, here in particular in the area of the traversing thread guide, depending on the compensating movement reduced or completely eliminated.

In principle, any movement of the head thread guide can take place. To name just a few examples that do not limit the invention, the head thread guide can be guided relative to the frame via a translatory guide, a curved guide or an arcuate guide. These variants can be used both when the thread tail is guided translationally with respect to the frame, and also in the event that the thread tail is pivoted relative to the frame, for example via a swivel arm. Here, the movement of the head thread guide preferably takes place in such a way that it corresponds to the compensating movement of the thread tail unit with respect to the direction and / or the amount, or is approximated to this. For a special proposal of the invention, the movement of the top thread guide takes place in such a way that an entry angle β of the winding material into the thread guide does not change in a plane which is oriented transversely to the traversing axis of the traversing thread guide, including in particular also changes in the entry angle β of + /-5.0 ° or +/- 2.0 ° or +/- 1.0 ° or +/- 0.5 ° can be subsumed.

There are various possibilities for causing the head thread guide to move. For a variant encompassed by the invention, the head thread guide can be moved via an actuator, the movement controlled by the actuator taking place as a function of the compensating movement. To name just a few examples that do not limit the invention, the diameter of the winding can be detected directly or indirectly by means of a sensor. For example, the sensor can use a distance measurement, a feeler wheel and the like. Ä. capture the diameter of the winding. It is also possible for the diameter of the winding to be detected indirectly by measuring a movement of the thread tail unit as a result of the compensating movement. It is also possible to indirectly determine the diameter of the winding by measuring a length of the wound material from which the diameter of the winding can be calculated. To cite just another example, the extent of the movement of the traversing thread guide, in particular the number of strokes passed, can be used to infer the diameter of the winding indirectly. Another possibility for determining the diameter of the winding is the calculation of the same from the Spindle speed and / or the speed of the winding material. For example, the length of the winding material, which is wound in the winding, can be calculated from the integral of the speed of the winding material (which can also be calculated from the course of the spindle speed), from which then in turn, the diameter of the winding can be determined via a map or a functional dependency. If there is then a corresponding signal with regard to the current diameter of the winding, the actuator can be actuated by means of a control unit, which then moves the head thread guide to the required extent.

A particularly simple but reliable possibility for bringing about the movement of the head thread guide is the mechanical coupling of the compensating movement of the thread guide with the movement of the head thread guide, so that passive measures are taken here. In the simplest case, the thread tail is mechanically coupled to the head thread guide via a coupling means such as a coupling strut or possibly also a gear connection, so that the compensating movement of the thread tail is converted via the kinematics of the coupling strut or the gear connection arranged between the head thread guide and the thread tail in the movement of the head thread guide.

Any traversing thread guide can be used in the thread guide, as is known, for example, from the different embodiments of the prior art. Preferably, a traversing thread guide is used in the winding machine according to the invention, which slidably guides and / or deflects the winding material.

There are many possibilities for the length of the material to be wound between the head thread guide and the traversing thread guide within the scope of the invention. For a proposal of the invention, this length is at least 300 mm (for example more than 350 mm, more than 400 mm, more than 450 mm, more than 500 mm or even more than 600 mm). A choice of such a length means that the laying triangle also has a corresponding length, so that a change in the length of the winding material between the head thread guide and the traversing thread guide, which could lead to a change in the tension of the winding material, is relatively small, which may result in the use of a compensation bracket can be dispensed with. On the other hand, with such a large length of the winding material between the top thread guide and the traversing thread guide, a deflection angle of the winding material in the area of the traversing thread guide is also reduced, thereby reducing the stresses on the winding material.

Basically, as also explained at the beginning, the head thread guide on the one hand and the thread tail on the other hand can have any degrees of freedom. For a proposal of the invention, the thread guide and the head thread guide are each translationally guided, the translational degrees of freedom of the thread guide and the head thread guide being oriented parallel to one another. The movements of the thread tail on the one hand and the head thread guide on the other hand are preferably synchronous with the same amplitude along the parallel degrees of freedom. It is possible, for example, that a head thread guide is arranged in the lower end region of the winding machine and that it is guided in translation in the horizontal direction by means of a guide. In this case, the thread guide can be arranged in an upper end region of a frame of the winding machine with a likewise horizontal degree of freedom. In this way, a small length of the winding material between the head thread guide and the traversing thread guide can still be ensured with the small construction size of the winding machine, with the advantages explained above and associated therewith.

Advantageous further developments of the invention result from the patent claims, the description and the drawings. The advantages of features and of combinations of several features mentioned in the description are only examples and can have an alternative or cumulative effect without the advantages necessarily having to be achieved by embodiments according to the invention. Without changing the subject matter of the appended claims, the following applies with regard to the disclosure content of the original application documents and the patent: Further features can be found in the drawings, in particular the geometries shown and the relative dimensions of a plurality of components with respect to one another, as well as their relative arrangement and operative connection. The combination of features of different embodiments of the invention or of features of different claims is also possible, deviating from the selected back relationships of the claims, and is hereby suggested. This also applies to those features which are shown in separate drawings or mentioned in the description. These features can also be combined with features of different claims. Features listed in the claims can also be omitted for further embodiments of the invention.

The number of features mentioned in the patent claims and in the description are to be understood in such a way that exactly this number or a greater number than the number mentioned is present without the explicit use of the adverb "at least" requirement. If, for example, an element is mentioned, it is to be understood that there is exactly one element, two elements or more elements. These characteristics can be supplemented by other characteristics or the only characteristics that make up the respective product.

The reference numerals contained in the patent claims do not represent any restriction of the scope of the objects protected by the patent claims. They serve only the purpose of making the patent claims easier to understand.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

zeigt in einer räumlichen Ansicht schräg von vorne und oben eine Spulmaschine.

Fig. 2

zeigt die Spulmaschine gemäß Fig. 1 in einer Vorderansicht.

Fig. 3

zeigt die Spulmaschine gemäß Fig. 1 und 2 in einer Vorderansicht, wobei hier ein Rahmen teilweise durchbrochen dargestellt ist, so dass eine Kopplungsstrebe zwischen einem Fadenleitwerk und einem Kopffadenführer zu erkennen ist.

Fig. 4

zeigt in einer Seitenansicht die Spulmaschine gemäß Fig. 1 bis 3.

Fig. 5

zeigt ein Detail einer Vorderansicht der Spulmaschine gemäß Fig. 1 bis 4 im Kontaktbereich des Fadenleitwerks mit einer Wicklung.

The invention is further explained and described below with reference to preferred exemplary embodiments illustrated in the figures.

Fig. 1

shows a spatial view obliquely from the front and above a winding machine.

Fig. 2

shows the winder according to Fig. 1 in a front view.

Fig. 3

shows the winder according to Fig. 1 and 2nd in a front view, here a frame is shown partially broken, so that a coupling strut between a thread guide and a head thread guide can be seen.

Fig. 4

shows a side view of the winder according to 1 to 3 .

Fig. 5

shows a detail of a front view of the winder according to 1 to 4 with a winding in the contact area of the thread tail unit.

FIGURE DESCRIPTION

Fig. 1 shows a spatial view of a winder 1. The winder 1 has a frame 2, which with a cover plate, a housing, a frame u. Ä. Can be formed. The essential components of the winding machine 1 mentioned below are held and / or guided on the frame 2.

The winding machine 1 has a stationary rotating spindle 3, which is oriented parallel to a y-axis. A thread tail 4 extends parallel to the spindle 3 and in the direction of the y-axis. The thread tail 4 is movably mounted on the frame 2 via a guide 5, which here specifies a horizontal degree of freedom 6. The thread tail 4 has a pressure means 7, here a pressure roller 8, the pressure roller 8 being rotatably mounted parallel to the y-axis on a base body of the thread tail 4. The thread tail 4 is loaded along the degree of freedom 6 in the direction of the spindle 3 by means of a suitable actuator (not shown here) or a weight, so that the thread tail 4 is supported by the pressure roller 8 with a predetermined pressure force on the outer surface of a winding created on the spindle 3 is. The thread tail unit 4 has a traversing thread guide 9, which is moved back and forth parallel to the y-axis with a traversing movement 10.

A winding material 11 is provided, for example, via a continuous or discontinuous manufacturing process and is fed to the thread guide 4, here the traversing thread guide 9 via an input roller 12, a deflection roller 13 and a head thread guide 14, which is designed here as a head thread guide roller 15. There is no further guide element between the head thread guide 14 and the thread tail unit 4, by means of which the winding material 11 is guided or deflected. A laying triangle 16 with a total traversing angle α is established between the top thread guide 14 and the thread guide 4 (cf. Fig. 4 ), with the head thread guide 14 specifying the apex 17 of the laying triangle 16 and the length of the laying triangle 16 corresponding to a distance 22 between the head thread guide 14 and the traversing thread guide 9. The head thread guide 14 is guided over a guide 18 with a translatory and horizontal degree of freedom 19 relative to the frame 2.

In the figures, an x-axis denotes a horizontal direction, which for the exemplary embodiment shown is oriented parallel to the degrees of freedom 6, 19. The y-axis is oriented parallel to the longitudinal and / or rotational axis of the spindle 3. Furthermore, the thread guide 4 extends in the direction of the y-axis, the traversing movement 10 of the traversing thread guide 9 is oriented parallel to the y-axis and the pressure roller 8 rotates about the y-axis. Finally, a z-axis denotes a vertical axis of the winder 1. An entry angle β denotes the angle of the ware 11 in the xz plane with respect to the z-axis.

Fig. 2 shows the winding machine at the beginning of the winding trip, that is, at the beginning of the creation of a winding on the spindle 3. At the beginning of the winding trip, the thread tail 4 has assumed the position in the direction of the degree of freedom 6, which is the smallest radial distance from the longitudinal and rotational axis of the spindle 3 has. In the course of the winding travel, the diameter of the winding increases, which has the consequence that the thread tail 4 moves increasingly along the degree of freedom 6 with a compensating movement 23 away from the longitudinal and / or rotational axis of the spindle 3. If, contrary to the configuration according to the invention, the head thread guide 14 were arranged in a fixed position on the frame 2, this compensating movement 23 of the thread tail unit 4 would result in the entry angle β changing (for the exemplary embodiment shown: reduced), which is undesirable. According to the invention, movement of the head thread guide 14 along the degree of freedom 19 is brought about, the extent of the movement of the head thread guide 14 corresponding to the extent of the movement of the thread tail unit 4. Regardless of the diameter of the winding and the compensating movement 23, this measure allows the entry angle β to be kept constant over the winding cycle. The consequence of this is that the geometry, in particular the length of the laying triangle 16 between the head thread guide 14 and the thread guide 4 does not change with the compensating movement 23.

The coupling of the movement of the thread guide 4 with the movement of the head thread guide 14 takes place for the exemplary embodiment shown via a mechanical coupling means 20, which is designed here as a coupling strut 21, which rigidly connects the thread guide 4 to the head thread guide 14 (cf. Fig. 3 ). Here, the coupling strut 21 preferably runs inside the frame or housing 2, so that it is not visible from the outside and is covered by a housing wall.

In Fig. 5 It can be seen that, for a possible configuration, the traversing thread guide 9 is plate-shaped, the traversing thread guide 9 in this case having a U-shaped recess, for example, through which the winding material 11 passes. In the middle of the laying triangle 16, the winding material 11 then passes in a straight line without deflection through the U-shaped recess, while for deflection from the central position there is a deflection through a side leg of the U of the traversing thread guide 9 and one with increasing distance from the central position greater deflection takes place through this side leg of the U. The traversing thread guide 9, which is in the form of a plate here, is vertical to the direction of entry of the material to be wound 11 oriented so that the traversing thread guide 9 and the plane of extension of the U-shaped recess is also inclined at the entry angle β with respect to the xy plane.

1. a) Da sich der Einlaufwinkel β nicht ändert, sind die Kontaktbedingungen des Spulguts 11 mit dem Kopffadenführer 14 unabhängig von der Ausgleichsbewegung 23 und dem Durchmesser der Wicklung der Spule.
2. b) Ist der Kopffadenführer 14 als Kopffadenführerrolle 15 ausgebildet, hat die erfindungsgemäße Ausgestaltung auch zur Folge, dass sich der Umschlingungswinkel der Kopffadenführerrolle 15 mit der Ausgleichsbewegung 23 nicht oder in einem verringerten Ausmaß ändert. (Ein sich mit der Ausgleichsbewegung 23 nicht ändernder Umschlingungswinkel ergibt sich insbesondere dann, wenn das Spulgut 11 parallel zu der Ausgleichsbewegung 23 auf die Kopffadenführerrolle 15 aufläuft, während sich bei anderer Auflaufrichtung des Spulguts 11 auf die Kopffadenführerrolle 15 mit der Ausgleichsbewegung 23 eine Veränderung des Umschlingungswinkels ergeben kann.)
3. c) Des Weiteren sind die Einlaufbedingungen des Spulguts 11 in das Fadenleitwerk 4 und insbesondere in den Changierfadenführer 9 nicht von der Ausgleichsbewegung 23 und damit dem Durchmesser der im Aufbau befindlichen Wicklung abhängig. Möglich ist beispielsweise, dass durch die erfindungsgemäßen Maßnahmen vermieden ist, dass infolge eines veränderten Einlaufwinkels β das Spulgut 11 stärker in den Grund der U-förmigen Ausnehmung des Changierfadenführers 9 hereingezogen wird (Vergrößerung des Einlaufwinkels β), womit dann auch ein Umlenkwinkel des Spulguts 11 im Bereich der U-förmigen Ausnehmung des Changierfadenführers 9 vergrößert wäre. Vermieden werden kann durch die erfindungsgemäße Maßnahme auch, dass infolge eines verringerten Einlaufwinkels β bei dem Eintritt des Spulguts 11 in den Changierfadenführer 9 das Spulgut 11 geringfügig nach oben, unter einem veränderten Winkel, aus den Seitenschenkeln der U-förmigen Ausnehmung herausgezogen wird.
4. d) Der Abstand 22 des Kopffadenführers 14 von dem Changierfadenführer 9 (vgl. Fig. 2) beträgt zumindest 300 mm. Durch die verhältnismäßig große Entfernung des Kopffadenführers 14 von dem Changierfadenführer 9 verändert sich die Länge des Spulguts 11 zwischen dem Kopffadenführer 14 und dem Changierfadenführer 9 während eines Hubs der Changierbewegung 10 nur wenig, womit unter Umständen Ausgleichsmaßnahmen 23 wie der Einsatz eines Kompensationsbügels entbehrlich sind. Hierbei korreliert der Abstand 22 mit der Länge des Verlegedreiecks 16.
5. e) Erfindungsgemäß ergibt sich eine Vermeidung oder Reduzierung einer Qualitätsminderung des Spulguts 11 infolge von sich über die Spulreise ändernden Kontaktbedingungen des Spulguts 11 und eine Verbesserung der Spulenqualität gegenüber Spulmaschinen, bei welchen sich ein Einlaufwinkel β über die Spulreise ändert mit unter Umständen hieraus resultierendem veränderten Gesamtchangierwinkel α des Verlegedreiecks 16.
6. f) Erfindungsgemäß kann unter Umständen auch der Einsatz eines Changierfadenführers 9 erfolgen, bei dem keine Umschlingung durch das Spulgut 11 erfolgt und lediglich eine Führung des Spulguts 11 parallel zu der Längs- und/oder Rotationsachse der Spindel 3 erfolgt. Für diese Ausgestaltung kann das Spulgut 11 infolge einer verringerten Biegebelastung infolge der entfallenen Umschlingung geschont werden.

The embodiment according to the invention leads in particular to the following (alternative or cumulative) differences and advantages over the solutions known from the prior art with a fixed head thread guide 14:

1. a) Since the entry angle β does not change, the contact conditions of the winding material 11 with the head thread guide 14 are independent of the compensating movement 23 and the diameter of the winding of the bobbin.
2. b) If the head thread guide 14 is designed as a head thread guide roller 15, the embodiment according to the invention also has the consequence that the wrap angle of the head thread guide roller 15 does not change or changes to a reduced extent with the compensating movement 23. (A wrap angle that does not change with the compensating movement 23 arises in particular when the winding material 11 runs parallel to the compensating movement 23 onto the head thread guide roller 15, while in the other direction of the winding material 11 on the head thread guide roller 15 with the compensating movement 23 there is a change in the wrap angle can result.)
3. c) Furthermore, the entry conditions of the winding material 11 into the thread guide 4 and in particular into the traversing thread guide 9 are not dependent on the compensating movement 23 and thus on the diameter of the winding being built up. It is possible, for example, that the measures according to the invention prevent the winding material 11 from being pulled more strongly into the base of the U-shaped recess of the traversing thread guide 9 as a result of a changed inlet angle β (enlargement of the inlet angle β), which then also results in a deflection angle of the winding material 11 would be enlarged in the area of the U-shaped recess of the traversing thread guide 9. It can also be avoided by the measure according to the invention that as a result of a reduced inlet angle β when the material to be wound 11 enters the traversing thread guide 9, the material to be wound 11 is pulled out slightly from the side legs of the U-shaped recess at a changed angle.
4. d) The distance 22 of the head thread guide 14 from the traversing thread guide 9 (cf. Fig. 2 ) is at least 300 mm. Due to the relatively large distance of the head thread guide 14 from the traversing thread guide 9, the length of the winding material 11 between the head thread guide 14 and the traversing thread guide 9 changes only slightly during a stroke of the traversing movement 10, which means that compensatory measures 23 such as the use of a compensation bracket may be unnecessary. Here, the distance 22 correlates with the length of the laying triangle 16.
5. e) According to the invention, there is an avoidance or reduction of a reduction in the quality of the ware 11 as a result of contact conditions of the ware 11 changing over the winding travel and an improvement in the bobbin quality compared to winding machines in which an entry angle β over the winding travel changes with the resultant changed overall hinge angle α of the laying triangle 16.
6. f) According to the invention, a traversing thread guide 9 can also be used under certain circumstances, in which there is no looping through the winding material 11 and only the winding material 11 is guided parallel to the longitudinal and / or rotational axis of the spindle 3. For this configuration, the ware 11 can be spared due to a reduced bending load due to the omitted wrapping.

The invention includes embodiments in which the movement of the head thread guide 14 is dependent only on the compensating movement 23 of the thread tail 4, as well as embodiments in which the movement of the head thread guide 14 in addition to the dependence on the compensating movement 23 of the thread tail 4 also depends on at least one further company size is dependent.

The invention furthermore also includes embodiments in which the movement of the head thread guide 14 is coupled to the movement of the thread tail unit 4 not over the entire stroke, but only over a partial stroke of the compensating movement 23. The movement of the head thread guide 14 can be coupled to the movement of the thread tail unit 4 via any linear or non-linear dependency.

The invention also includes embodiments in which a movement of the head thread guide 14 is not only dependent on the movement of the thread guide 4, but can also be carried out for other purposes. For example, in the event that the head thread guide 14 is moved via an actuator, the movement of the head thread guide 14 can also be used to at least temporarily control or regulate the tension of the winding material 11. To name just another, non-limiting example, the movement of the head thread guide 14 can take place at the beginning of the winding trip, at the end of the winding trip or for an exchange of the bobbin, for example to support or enable catching or cutting of the winding material 11 or one To bring about configuration of the winding machine 1, which is advantageous for this particular operating state.

REFERENCE SIGN LIST

1

Dishwasher

2nd

frame

3rd

spindle

4th

Yarn tail

5

guide

6

Degree of freedom

7

Pressure means

8th

Pressure roller

9

Traversing thread guide

10th

Traversing movement

11

Rewash

12th

Entry role

13

Pulley

14

Head thread guide

15

Head thread guide roller

16

Laying triangle

17th

Parting

18th

guide

19th

Degree of freedom

20th

mechanical coupling agent

21

Coupling strut

22

distance

23

Compensatory movement

Claims (7)

Winder (1) with a) a frame (2), a) a spindle (3), b) a thread tail (4), which ba) has an oscillatingly driven traversing thread guide (9), bb) has a pressing means (7) which is pressed onto a lateral surface of a winding wound on the spindle (3), and bc) can be moved with a compensating movement (23) relative to the spindle (3) during the winding cycle in accordance with the increasing diameter of the winding, c) a head thread guide (14) arranged upstream of the traversing thread guide (9), which is arranged on the frame (2) at a distance from the thread guide (14) and from which the winding material (11) reaches the thread guide (4) directly,
characterized in that d) the head thread guide (14) can be moved as a function of the compensating movement (23). Winding machine (1) according to claim 1, characterized in that the movement of the head thread guide (14) takes place in such a way that an entry angle β of the winding material (11) into the thread guide in one plane (xz plane) which is transverse to a traversing axis of the Traversing thread guide (9) is oriented, does not change. Bobbin winder (1) according to claim 1 or 2, characterized in that the head thread guide (14) can be moved via an actuator as a function of the compensating movement (23). Winding machine (1) according to claim 1 or 2, characterized in that the compensating movement (23) of the thread guide (4) is mechanically coupled with the movement of the head thread guide (14). Winding machine (1) according to one of the preceding claims, characterized in that the traversing thread guide (9) slidably guides and / or deflects the winding material (11). Winding machine (1) according to one of the preceding claims, characterized in that the length of the material to be wound (11) between the top thread guide (14) and the traversing thread guide (9) is at least 300 mm. Bobbin winder (1) according to one of the preceding claims, characterized in that the thread guide (4) and the head thread guide (14) are each translationally guided with parallel degrees of freedom (6, 19).

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